CN220250412U - Double-tank positive uninterrupted thermal fluoride frost liquid drainage system - Google Patents

Abstract

The utility model discloses a double-tank forward uninterrupted thermal fluoride frost liquid discharge system, which is connected with a refrigerating unit to circularly convey refrigerant and comprises a first liquid discharge tank (1), a second liquid discharge tank (2) and a high-pressure liquid storage tank (3); the first liquid discharge tank (1) and the second liquid discharge tank (2) are arranged side by side, and the tank bottom is connected with the high-pressure liquid storage tank (3) through a lower liquid discharge three-way valve (4); the tank top is communicated with a liquid discharge pipe of the refrigerating unit through an upper liquid discharge three-way valve (5); the tank top is also connected with an air return pipe of the refrigerating unit through a first pressure reducing electromagnetic valve (6) and a second pressure reducing electromagnetic valve (7) respectively; the upper parts of the first liquid discharge tank (1) and the second liquid discharge tank (2) are connected with a high-pressure liquid storage tank (3) through a pressurizing three-way valve (8); the high-pressure liquid storage tank (3) is communicated with a liquid supply pipe of the refrigerating unit. The temperature of the refrigerator is stable during defrosting, the double-tank liquid discharge barrel works alternately, the temperature of the multi-fan continuous defrosting refrigerator cannot rise, the temperature of the refrigerator can also slowly drop under normal conditions, and the normal working of the refrigerator is ensured.

Description

Double-tank positive uninterrupted thermal fluoride frost liquid drainage system

Technical Field

The utility model belongs to the technical field of structures, and particularly relates to a double-tank positive uninterrupted thermal fluoride frost liquid drainage system.

Background

The existing refrigeration house adopting the air cooler as an evaporator is used in a large quantity, more fire accidents are caused by the previous electric heating defrosting, a hot fluorine defrosting system is arranged later, the problems of electric defrosting power consumption and easiness in fire disaster occurrence are solved, at present, the original refrigerant condensing pressure R22 is 1.53mpa and the existing refrigerant R507 is 1.88mpa under the standard refrigeration working condition due to the fact that the refrigerant R507 is used in a large quantity, the pressure of a pipeline can be increased by 0.35mpa, the pipeline pressure during reverse hot fluorine defrosting is increased, the rupture leakage of the pipeline of the air cooler is obviously increased, and if the forward defrosting is changed to the phenomenon that the capillary tube of the liquid separator blocks the airflow speed of hot fluorine, the impact of high-pressure hot fluorine on the pipeline of the air cooler is reduced, and thus the rupture fluorine leakage accident of the air cooler is reduced. However, the forward defrosting liquid discharge and the reverse defrosting liquid discharge are the same and are required to be discharged to a liquid separating tank, and the liquid in the liquid separating tank is sent to other air coolers through a multi-way throttling liquid supply pipeline to be evaporated and cooled and then returned to the compressor. Because the defrosting air cooler has great change of condensation working conditions of hot fluorine from full defrosting to clean frostless, and the initial full liquid in the liquid separating tank can reach the final full gas, other refrigeration fans are caused to refrigerate to non-refrigerate or heat, so that the temperature of the refrigerator is increased drastically, and the normal operation of the refrigerator is influenced.

Disclosure of Invention

The utility model aims to provide a double-tank forward uninterrupted thermal fluoride frost liquid drainage system, which has stable storage temperature during defrosting, and can realize the rotation work of double-tank liquid drainage barrels, so that the temperature of a multi-fan continuous defrosting refrigeration house can not rise, the storage temperature can also be reduced slowly under normal conditions, and the normal work of the refrigeration house is ensured.

The technical scheme provided by the utility model is as follows:

a double-tank forward uninterrupted thermal fluoride frost liquid discharge system is connected with a refrigerating unit to circularly convey refrigerant, and comprises a first liquid discharge tank 1, a second liquid discharge tank 2 and a high-pressure liquid storage tank 3;

the first liquid discharge tank 1 and the second liquid discharge tank 2 are arranged side by side, and the tank bottom is connected with the high-pressure liquid storage tank 3 through a lower liquid discharge three-way valve 4; the tank top is communicated with a liquid discharge pipe of the refrigerating unit through an upper liquid discharge three-way valve 5;

the first exhaust pipe 13 on the tank top of the first liquid discharge tank 1 is connected with an air return pipe of the refrigerating unit through a first decompression electromagnetic valve 6; the second exhaust pipe 23 on the tank top of the second liquid discharge tank 2 is connected with an air return pipe of the refrigerating unit through a second decompression electromagnetic valve 7;

the upper parts of the first liquid discharge tank 1 and the second liquid discharge tank 2 are connected with a high-pressure liquid storage tank 3 through a pressurizing three-way valve 8;

the high-pressure liquid storage tank 3 is communicated with a liquid supply pipe of the refrigerating unit.

A stop valve 9 is arranged between the lower liquid discharge three-way valve 4 and the high-pressure liquid storage tank 3; a stop valve 9 is arranged between the pressurizing three-way valve 8 and the high-pressure liquid storage tank 3.

The first liquid discharge pipe 11 at the bottom of the first liquid discharge tank 1 is connected with the lower liquid discharge second valve port 42 of the lower liquid discharge three-way valve 4; the second liquid discharge pipe 21 at the bottom of the second liquid discharge tank 2 is connected with the lower liquid discharge third valve port 43 of the lower liquid discharge three-way valve 4; the lower liquid discharge first valve port 41 of the lower liquid discharge three-way valve 4 is communicated with the high-pressure liquid storage tank 3;

the lower liquid discharging three-way valve 4 controls the on-off of the lower liquid discharging first valve port 41 and the lower liquid discharging second valve port 42 or the on-off of the lower liquid discharging first valve port 41 and the lower liquid discharging third valve port 43, and is communicated with the first liquid discharging tank 1 and the high-pressure liquid storage tank 3 or the second liquid discharging tank 2 and the high-pressure liquid storage tank 3.

The first liquid inlet pipe 12 on the tank top of the first liquid discharge tank 1 is connected with the upper liquid discharge second valve port 52 of the upper liquid discharge three-way valve 5; the second liquid inlet pipe 22 on the top of the second liquid discharge tank 2 is connected with the upper liquid discharge third valve opening 53 of the upper liquid discharge three-way valve 5; the upper liquid discharge first valve port 51 of the upper liquid discharge three-way valve 5 is communicated with a liquid discharge pipe of the refrigerating unit;

the upper liquid discharge three-way valve 5 controls the on-off of the upper liquid discharge first valve port 51 and the upper liquid discharge second valve port 52 or the on-off of the upper liquid discharge first valve port 51 and the upper liquid discharge third valve port 53, and is communicated with the liquid discharge pipe of the first liquid discharge tank 1 and the refrigerating unit or the liquid discharge pipe of the second liquid discharge tank 2 and the refrigerating unit.

The first pressurizing pipe 14 at the upper part of the first liquid discharge tank 1 is connected with the pressurizing second valve port 82 of the pressurizing three-way valve 8; the second pressurizing pipe 24 at the upper part of the second liquid discharge tank 2 is connected with the pressurizing third valve port 83 of the pressurizing three-way valve 8, and the pressurizing first valve port 81 of the pressurizing three-way valve 8 is connected with the high-pressure liquid storage tank 3;

the pressurizing three-way valve 8 controls the on-off of the pressurizing first valve port 81 and the pressurizing second valve port 82 or the on-off of the pressurizing first valve port 81 and the pressurizing third valve port 83, and is communicated with the first liquid discharge tank 1 and the high-pressure liquid storage tank 3 or the second liquid discharge tank 2 and the high-pressure liquid storage tank 3.

According to the technical scheme provided by the utility model, the double-tank forward uninterrupted thermal fluoride frost liquid drainage system provided by the embodiment of the utility model has the advantages that the storage temperature is stable during defrosting, the double-tank liquid drainage barrels work alternately, the temperature of the multi-fan continuous defrosting refrigeration storage can not rise, the storage temperature can also be reduced slowly under normal conditions, and the normal operation of the refrigeration storage is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a two-tank forward uninterruptible thermal fluoride frost drain system according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a compression refrigeration and defrosting structure of a double-tank forward continuous thermal fluoride frost drain system according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of the overall structure of a double-tank forward uninterruptable thermal fluoride frost drainage system according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

The terms that may be used herein will first be described as follows:

the term "and/or" is intended to mean that either or both may be implemented, e.g., X and/or Y are intended to include both the cases of "X" or "Y" and the cases of "X and Y".

The terms "comprises," "comprising," "includes," "including," "has," "having" or other similar referents are to be construed to cover a non-exclusive inclusion. For example: including a particular feature (e.g., a starting material, component, ingredient, carrier, formulation, material, dimension, part, means, mechanism, apparatus, step, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product or article of manufacture, etc.), should be construed as including not only a particular feature but also other features known in the art that are not explicitly recited.

The term "consisting of … …" is meant to exclude any technical feature element not explicitly listed. If such term is used in a claim, the term will cause the claim to be closed, such that it does not include technical features other than those specifically listed, except for conventional impurities associated therewith. If the term is intended to appear in only a clause of a claim, it is intended to limit only the elements explicitly recited in that clause, and the elements recited in other clauses are not excluded from the overall claim.

The term "parts by mass" means a mass ratio relationship between a plurality of components, for example: if the X component is described as X parts by mass and the Y component is described as Y parts by mass, the mass ratio of the X component to the Y component is expressed as x:y;1 part by mass may represent any mass, for example: 1 part by mass may be expressed as 1kg or 3.1415926 kg. The sum of the mass parts of all the components is not necessarily 100 parts, and may be more than 100 parts, less than 100 parts, or 100 parts or equal. The parts, proportions and percentages described herein are by mass unless otherwise indicated.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and the like should be construed broadly to include, for example: the connecting device can be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms herein above will be understood by those of ordinary skill in the art as the case may be.

When concentrations, temperatures, pressures, dimensions, or other parameters are expressed as a range of values, the range is to be understood as specifically disclosing all ranges formed from any pair of upper and lower values within the range of values, regardless of whether ranges are explicitly recited; for example, if a numerical range of "2 to 8" is recited, that numerical range should be interpreted to include the ranges of "2 to 7", "2 to 6", "5 to 7", "3 to 4 and 6 to 7", "3 to 5 and 7", "2 and 5 to 7", and the like. Unless otherwise indicated, numerical ranges recited herein include both their endpoints and all integers and fractions within the numerical range.

The terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for ease of description and to simplify the description, and do not explicitly or implicitly indicate that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present disclosure.

Embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

As shown in figure 1, the double-tank forward uninterrupted thermal fluoride frost liquid discharge system is connected with a refrigerating unit to circularly convey a refrigerant, and the structure mainly comprises a first liquid discharge tank 1, a second liquid discharge tank 2, a high-pressure liquid storage tank 3, three tank bodies, valves, pipelines and the like.

The first liquid discharge tank 1 and the second liquid discharge tank 2 are arranged side by side, and the tank bottoms of the first liquid discharge tank 1 and the second liquid discharge tank 2 are connected with the high-pressure liquid storage tank 3 through a lower liquid discharge three-way valve 4; specifically, the first liquid discharge pipe 11 at the bottom of the first liquid discharge tank 1 is connected with the lower liquid discharge second valve port 42 of the lower liquid discharge three-way valve 4; the second liquid discharge pipe 21 at the bottom of the second liquid discharge tank 2 is connected with the lower liquid discharge third valve port 43 of the lower liquid discharge three-way valve 4; the lower drain first valve port 41 of the lower drain three-way valve 4 is communicated with the high-pressure liquid storage tank 3 through the first high-pressure tank connecting pipe 31.

The lower liquid discharging three-way valve 4 controls the on-off of the lower liquid discharging first valve port 41 and the lower liquid discharging second valve port 42 or the on-off of the lower liquid discharging first valve port 41 and the lower liquid discharging third valve port 43, and is communicated with the first liquid discharging tank 1 and the high-pressure liquid storage tank 3 or the second liquid discharging tank 2 and the high-pressure liquid storage tank 3. The specific lower liquid discharging three-way valve 4 is an electromagnetic valve, and can be uniformly and automatically controlled by a control system of the refrigerating unit.

Specifically, the lower liquid discharge three-way valve 4 controls the communication between the lower liquid discharge first valve port 41 and the lower liquid discharge second valve port 42, so as to further communicate the first liquid discharge tank 1 with the high-pressure liquid storage tank 3, and meanwhile, the lower liquid discharge three-way valve 4 controls the disconnection between the lower liquid discharge first valve port 41 and the lower liquid discharge third valve port 43, so as to disconnect the pipeline between the second liquid discharge tank 2 and the high-pressure liquid storage tank 3.

The lower liquid discharge three-way valve 4 can control the lower liquid discharge first valve port 41 to be communicated with the lower liquid discharge third valve port 43 so as to be communicated with the second liquid discharge tank 2 and the high-pressure liquid storage tank 3, and meanwhile, the lower liquid discharge three-way valve 4 can control the lower liquid discharge first valve port 41 to be disconnected with the lower liquid discharge second valve port 42 so as to disconnect a pipeline between the first liquid discharge tank 1 and the high-pressure liquid storage tank 3.

The tank tops of the first liquid discharge tank 1 and the second liquid discharge tank 2 are communicated with a liquid discharge pipe of the refrigerating unit through an upper liquid discharge three-way valve 5; specifically, a first liquid inlet pipe 12 at the tank top of the first liquid discharge tank 1 is connected with an upper liquid discharge second valve port 52 of an upper liquid discharge three-way valve 5; the second liquid inlet pipe 22 on the top of the second liquid discharge tank 2 is connected with the upper liquid discharge third valve opening 53 of the upper liquid discharge three-way valve 5; the upper liquid discharge first valve port 51 of the upper liquid discharge three-way valve 5 is communicated with a liquid discharge pipe of the refrigerating unit.

The upper liquid discharge three-way valve 5 controls the on-off of the upper liquid discharge first valve port 51 and the upper liquid discharge second valve port 52 or the on-off of the upper liquid discharge first valve port 51 and the upper liquid discharge third valve port 53, and is communicated with the liquid discharge pipe of the first liquid discharge tank 1 and the refrigerating unit or the liquid discharge pipe of the second liquid discharge tank 2 and the refrigerating unit. The upper liquid discharge three-way valve 5 is a solenoid valve, and can be uniformly and automatically controlled by a control system of the refrigerating unit.

Specifically, the upper liquid discharge three-way valve 5 controls the upper liquid discharge first valve port 51 to be communicated with the upper liquid discharge second valve port 52 so as to be communicated with the first liquid discharge tank 1 and the liquid discharge pipe of the refrigerating unit, and meanwhile, the lower liquid discharge three-way valve 4 controls the upper liquid discharge first valve port 51 to be disconnected with the upper liquid discharge third valve port 53 so as to be disconnected with the second liquid discharge tank 2 and the liquid discharge pipe of the refrigerating unit.

The upper liquid discharge three-way valve 5 can also control the upper liquid discharge first valve port 51 to be communicated with the upper liquid discharge third valve port 53 so as to be communicated with the second liquid discharge tank 2 and the liquid discharge pipe of the refrigerating unit, and meanwhile, the upper liquid discharge three-way valve 5 can control the upper liquid discharge first valve port 51 to be disconnected with the upper liquid discharge second valve port 52 so as to disconnect the first liquid discharge tank 1 from the liquid discharge pipe of the refrigerating unit.

The first exhaust pipe 13 on the tank top of the first liquid discharge tank 1 is connected with an air return pipe of the refrigerating unit through a first decompression electromagnetic valve 6; the second exhaust pipe 23 on the tank top of the second liquid discharge tank 2 is connected with an air return pipe of the refrigerating unit through a second decompression electromagnetic valve 7. The first decompression electromagnetic valve 6 and the second decompression electromagnetic valve 7 are electromagnetic valves, and can be uniformly and automatically controlled by a control system of the refrigerating unit.

The upper parts of the first liquid discharge tank 1 and the second liquid discharge tank 2 are connected with a high-pressure liquid storage tank 3 through a pressurizing three-way valve 8; specifically, the first pressurizing pipe 14 at the upper part of the first liquid discharge tank 1 is connected with the pressurizing second valve port 82 of the pressurizing three-way valve 8; the second pressurizing pipe 24 at the upper part of the second liquid discharge tank 2 is connected with the pressurizing third valve port 83 of the pressurizing three-way valve 8, and the pressurizing first valve port 81 of the pressurizing three-way valve 8 is connected with the high-pressure liquid storage tank 3 through the second high-pressure tank connecting pipe 32.

The pressurizing three-way valve 8 controls the on-off of the pressurizing first valve port 81 and the pressurizing second valve port 82 or the on-off of the pressurizing first valve port 81 and the pressurizing third valve port 83, and is communicated with the first liquid discharge tank 1 and the high-pressure liquid storage tank 3 or the second liquid discharge tank 2 and the high-pressure liquid storage tank 3. The specific pressurizing three-way valve 8 is an electromagnetic valve, and can be uniformly and automatically controlled by a control system of the refrigerating unit.

Specifically, the pressurizing three-way valve 8 controls the communication between the pressurizing first valve port 81 and the pressurizing second valve port 82, so as to further communicate the first liquid discharge tank 1 and the high-pressure liquid storage tank 3, and simultaneously, the pressurizing three-way valve 8 controls the disconnection between the pressurizing first valve port 81 and the pressurizing third valve port 83, so as to disconnect the connection between the second liquid discharge tank 2 and the high-pressure liquid storage tank 3.

The pressurizing three-way valve 8 may control the communication between the pressurizing first valve port 81 and the pressurizing third valve port 83, so as to further open the second liquid discharge tank 2 and the high-pressure liquid storage tank 3, and the pressurizing three-way valve 8 may control the disconnection between the pressurizing first valve port 81 and the pressurizing second valve port 82, so as to disconnect the connection between the first liquid discharge tank 1 and the high-pressure liquid storage tank 3.

The high-pressure liquid storage tank 3 is communicated with a liquid supply pipe of the refrigerating unit, and particularly is communicated with the liquid supply pipe of the refrigerating unit through a third high-pressure tank connecting pipe 33.

In addition, a stop valve 9 is arranged between the lower liquid discharge three-way valve 4 and the high-pressure liquid storage tank 3; a stop valve 9 is arranged between the pressurizing three-way valve 8 and the high-pressure liquid storage tank 3. The first high-pressure tank connecting pipe 31 and the second high-pressure tank connecting pipe 32 are provided with stop valves 9 for closing or opening the communication between the high-pressure liquid storage tank 3 and the pressurizing three-way valve 8 and between the high-pressure liquid storage tank 3 and the lower liquid discharge three-way valve 4. The stop valve 9 can be an electromagnetic valve, and can be uniformly and automatically controlled by a control system of the refrigerating unit.

Principle of operation

As shown in fig. 2, the compressor 100 sucks low-temperature low-pressure gas for isentropic compression and then discharges high-pressure high-temperature superheated dry steam, the superheated dry steam enters the condenser 200 to convert heat into other mediums (air or water) to be condensed into supercooled high-pressure liquid, and the supercooled high-pressure liquid is changed into low-temperature low-pressure vapor-liquid mixture after isenthalpic throttling through the expansion valve 400 (or a throttle valve) because the refrigerant condensation process is a constant-temperature constant-pressure exothermic phase state conversion process, namely a gaseous state liquid state conversion process, and the refrigerant after the heat exchange medium and the refrigerant are liquefied due to temperature difference can continuously lose heat. The low-temperature low-pressure gas-liquid mixture enters an air cooler 300 to evaporate and absorb heat (refrigeration process) to be gasified into complete low-temperature low-pressure gas, and then enters a compressor to compress and reciprocate. In the refrigerating process, the completely low-temperature low-pressure gas from the air cooler enters each air return pipe branch pipe through the hot fluoride frost valve 303 and the air return stop valve 317 in fig. 3 and then is combined with the air return pipe of the refrigerating unit; at this time, the thermal fluoride frost valve 303 is reversed to communicate the defrosting valve first valve port 3031 with the defrosting valve third valve port 3033.

Principle of thermal fluorination frost: moisture in the air is frozen on the surface of the heat exchanger during the heat absorption process of the evaporator of the air cooler 300 to block the heat exchange and the air flow to influence the refrigerating effect, so that the frost on the surface of the evaporator must be melted, and the high-temperature and high-pressure overheated dry steam discharged from the compressor 100 can be introduced into one of the plurality of parallel evaporators, and the frost on the surface of the evaporator can be melted by heating from the inside of the evaporator. The other evaporators with normal refrigeration continuously absorb heat and vaporize the refrigerant in the refrigeration house to perform normal refrigeration. The discharge of superheated dry vapor via compressor 100 provides a heat source only for a group of evaporators for hot fluorine defrosting. After the defrosting of the group of evaporators is finished, the evaporator is switched into a normal refrigeration state, one group of evaporators with normal refrigeration is selected before the normal refrigeration state is switched into a hot fluorine defrosting state to begin defrosting, and the like.

The working principle of this example is applied as shown in fig. 3:

two jars of flowing back standby state: taking the standby liquid draining of the first liquid draining tank 1 as an example, the state that each valve keeps the first liquid draining tank 1 in standby liquid draining is specific, the upper liquid draining first valve port 51 of the upper liquid draining three-way valve 5 is controlled to be communicated with the upper liquid draining second valve port 52, the upper liquid draining first valve port 51 is disconnected from the upper liquid draining third valve port 53, and at the moment, defrosting liquid draining enters the first liquid draining tank 1 and cannot enter the second liquid draining tank 2.

Meanwhile, the lower liquid discharge first valve port 41 and the lower liquid discharge second valve port 42 of the lower liquid discharge three-way valve 4 are controlled to be disconnected and not communicated, and the lower liquid discharge first valve port 41 and the lower liquid discharge third valve port 43 are communicated, at the moment, the first liquid discharge tank 1 and the high-pressure liquid storage tank 3 are closed and not communicated, and the second liquid discharge tank 2 and the high-pressure liquid storage tank 3 are communicated, so that liquid can be discharged from the second liquid discharge tank 2 to the high-pressure liquid storage tank 3.

The first pressure reducing electromagnetic valve 6 is controlled to be opened, the first liquid discharge tank 1 is communicated with the air return pipe of the refrigerating unit, the pressure in the first liquid discharge tank 1 is reduced, and liquid is conveniently discharged into the first liquid discharge tank 1. And the second decompression electromagnetic valve 7 is controlled to be closed, the connection between the second liquid discharge tank 2 and the air return pipe of the refrigerating unit is disconnected, the pressure in the second liquid discharge tank 2 is kept to be the same as the pressure in the high-pressure liquid storage tank 3, and the liquid discharge of the second liquid discharge tank 2 into the high-pressure liquid storage tank 3 is facilitated.

The first pressurizing valve port 81 and the second pressurizing valve port 82 of the pressurizing three-way valve 8 are controlled to be disconnected and not communicated, the first pressurizing valve port 81 and the third pressurizing valve port 83 are communicated, at the moment, the first liquid discharge tank 1 and the high-pressure liquid storage tank 3 are closed and not communicated, low pressure in the first liquid discharge tank 1 is guaranteed, defrosting liquid discharge is convenient, the liquid discharge enters the first liquid discharge tank 1, meanwhile, the second liquid discharge tank 2 and the high-pressure liquid storage tank 3 are communicated, the pressure in the second liquid discharge tank 2 is the same as the pressure in the high-pressure liquid storage tank 3, and liquid can be discharged from the second liquid discharge tank 2 to the high-pressure liquid storage tank 3.

Other pipelines are normally connected, for example, the high-pressure liquid storage tank 3 is communicated with a liquid supply pipe of the refrigerating unit through a third high-pressure tank connecting pipe 33. The liquid supply pipe is divided into a plurality of branches to be connected with each air cooler, a liquid supply valve 310, a liquid supply filter 311, a liquid supply electromagnetic valve 312, a first one-way valve 313 and a liquid supply expansion valve 314 are sequentially arranged in each branch, the liquid supply head 306 is connected with the heat exchanger 308 of the air cooler, and meanwhile, the liquid supply expansion valve 314 is also connected with a temperature sensor 318 to collect related parameters. The upper liquid discharge first valve port 51 is connected with a liquid discharge pipe of the system, and the first exhaust pipe 13 is connected with an air return pipe of the refrigerating unit through the first pressure reducing electromagnetic valve 6; the second exhaust pipe 23 is connected with a refrigerating unit muffler through a second decompression electromagnetic valve 7.

Double-tank drain tank working principle:

taking the standby liquid draining of the first liquid draining tank 1 as an example, each valve keeps the state of the standby liquid draining of the first liquid draining tank 1, meanwhile taking the defrosting shape of the No. 1 air cooler as an example, (1) defrosting of the No. 1 air cooler, (2) (3) (4) normal refrigeration of the No. air cooler to provide a heat source, the hot fluorine ball valve 301 of the No. air cooler is opened with the hot fluorine electromagnetic valve 302, and the hot fluorine frost valve 303 is switched to the first valve port 3031 of the defrosting valve to be communicated with the second valve port 3032 of the defrosting valve. Here, one path of hot fluorine steam enters the control port of the hot fluorine frost valve 303 through the hot fluorine driving ball valve 315 and the hot fluorine filter 316, so as to perform reversing control of the hot fluorine frost valve 303. The other part of the hot fluorine steam is heated by a hot fluorine ball valve 301 and a hot fluorine electromagnetic valve 302 which enter a chassis heating pipe 304 of a No. 1 air cooler, then enter a liquid supply liquid separation head 306 through a second one-way valve 305 and enter a copper pipe fin or aluminum pipe fin heat exchanger 308 through a capillary 307; the hot fluorine is subjected to heat exchange with the frost on the heat exchanger 308 to defrost, the hot fluorine is condensed into liquid fluorine, then the liquid fluorine enters the first liquid discharge tank 1 through the liquid discharge pipe to perform liquid discharge from the first liquid discharge tank 3031, the defrosting valve first valve port 3031 of the hot fluorine frost valve 303 is provided with a temperature sensor 318, and the liquid fluorine is discharged from the defrosting valve second valve port 3032 of the hot fluorine frost valve 303.

After the first liquid draining tank 1 is full, the switching state of each valve keeps the state of the second liquid draining tank 2 in standby liquid draining, specifically, the upper liquid draining first valve port 51 and the upper liquid draining second valve port 52 of the upper liquid draining three-way valve 5 are controlled to be disconnected and not communicated, and the upper liquid draining first valve port 51 and the upper liquid draining third valve port 53 are communicated, at the moment, defrosting liquid draining enters the second liquid draining tank 2 and cannot enter the first liquid draining tank 1.

Meanwhile, the lower liquid discharge first valve port 41 and the lower liquid discharge second valve port 42 of the lower liquid discharge three-way valve 4 are controlled to be communicated, the lower liquid discharge first valve port 41 and the lower liquid discharge third valve port 43 are disconnected, at the moment, the first liquid discharge tank 1 and the high-pressure liquid storage tank 3 are communicated, the second liquid discharge tank 2 and the high-pressure liquid storage tank 3 are closed and are not communicated, and liquid can be discharged from the first liquid discharge tank 1 to the high-pressure liquid storage tank 3.

The first pressure reducing electromagnetic valve 6 is controlled to be closed, the first liquid discharge tank 1 and the return air pipe of the refrigerating unit are disconnected, the pressure in the first liquid discharge tank 1 is reduced, and liquid is conveniently discharged into the first liquid discharge tank 1. The second decompression electromagnetic valve 7 is controlled to be opened, the second liquid discharge tank 2 is communicated with the air return pipe of the refrigerating unit, the pressure in the first liquid discharge tank 1 is kept the same as the pressure in the high-pressure liquid storage tank 3, and the liquid discharge from the first liquid discharge tank 1 into the high-pressure liquid storage tank 3 is facilitated.

The first pressurizing valve port 81 and the second pressurizing valve port 82 of the pressurizing three-way valve 8 are controlled to be communicated, the first pressurizing valve port 81 and the third pressurizing valve port 83 are disconnected, at the moment, the second liquid discharge tank 2 and the high-pressure liquid storage tank 3 are closed and disconnected, low pressure in the second liquid discharge tank 2 is guaranteed, defrosting liquid discharge is convenient to enter the second liquid discharge tank 2, meanwhile, the first liquid discharge tank 1 and the high-pressure liquid storage tank 3 are communicated, the pressure in the first liquid discharge tank 1 is the same as the pressure in the high-pressure liquid storage tank 3, and liquid can be discharged from the first liquid discharge tank 1 to the high-pressure liquid storage tank 3.

At this time, the second liquid discharge tank 2 is turned into a liquid inlet state, the first liquid discharge tank 1 is turned into a liquid outlet state, the second liquid discharge tank 2 starts to feed liquid, and meanwhile, the first liquid discharge tank 1 starts to discharge liquid fluorine into the high-pressure liquid storage tank 3, and the liquid fluorine is sequentially and reciprocally circulated.

Therefore, the double-tank design is adopted in the embodiment, liquid can be continuously discharged, and the problems that only one liquid separating tank can appear, the initial full liquid can reach the final full gas, and other refrigerating fans can refrigerate to non-refrigerate or heat, so that the temperature of the refrigerator is severely increased and the normal operation of the refrigerator is influenced are solved. The air cooler for providing a heat source for normal refrigeration is ensured to be stable and unchanged from a liquid supply channel of the high-pressure liquid storage device. Meanwhile, the defrosting process can be automatically controlled by a control system, and the related control system belongs to the known technology for selecting and controlling the refrigerating unit and each valve, and the detailed description is omitted.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (5)

1. The double-tank forward uninterrupted thermal fluoride frost liquid discharge system is connected with a refrigerating unit to circularly convey a refrigerant and is characterized by comprising a first liquid discharge tank (1), a second liquid discharge tank (2) and a high-pressure liquid storage tank (3);

the first liquid discharge tank (1) and the second liquid discharge tank (2) are arranged side by side, and the tank bottom is connected with the high-pressure liquid storage tank (3) through a lower liquid discharge three-way valve (4); the tank top is communicated with a liquid discharge pipe of the refrigerating unit through an upper liquid discharge three-way valve (5);

a first exhaust pipe (13) at the top of the first liquid discharge tank (1) is connected with an air return pipe of the refrigerating unit through a first decompression electromagnetic valve (6); a second exhaust pipe (23) at the top of the second liquid discharge tank (2) is connected with an air return pipe of the refrigerating unit through a second decompression electromagnetic valve (7);

the upper parts of the first liquid discharge tank (1) and the second liquid discharge tank (2) are connected with a high-pressure liquid storage tank (3) through a pressurizing three-way valve (8);

the high-pressure liquid storage tank (3) is communicated with a liquid supply pipe of the refrigerating unit.

2. The double-tank forward uninterrupted thermal fluoride frost liquid draining system according to claim 1, wherein a stop valve (9) is arranged between the lower liquid draining three-way valve (4) and the high-pressure liquid storage tank (3); a stop valve (9) is arranged between the pressurizing three-way valve (8) and the high-pressure liquid storage tank (3).

3. The double-tank positive uninterrupted thermal fluoride frost drainage system according to claim 1 or 2, wherein a first drainage pipe (11) at the tank bottom of the first drainage tank (1) is connected with a lower drainage second valve port (42) of a lower drainage three-way valve (4); a second liquid discharge pipe (21) at the bottom of the second liquid discharge tank (2) is connected with a lower liquid discharge third valve port (43) of the lower liquid discharge three-way valve (4); the lower liquid discharge first valve port (41) of the lower liquid discharge three-way valve (4) is communicated with the high-pressure liquid storage tank (3);

the lower liquid discharge three-way valve (4) controls the on-off of the lower liquid discharge first valve port (41) and the lower liquid discharge second valve port (42) or the on-off of the lower liquid discharge first valve port (41) and the lower liquid discharge third valve port (43), and is communicated with the first liquid discharge tank (1) and the high-pressure liquid storage tank (3) or the second liquid discharge tank (2) and the high-pressure liquid storage tank (3).

4. The double-tank positive uninterruptable thermal fluoride frost drainage system according to claim 1 or 2, wherein a first liquid inlet pipe (12) at the tank top of the first liquid drainage tank (1) is connected with an upper liquid drainage second valve port (52) of an upper liquid drainage three-way valve (5); a second liquid inlet pipe (22) at the top of the second liquid discharge tank (2) is connected with an upper liquid discharge third valve port (53) of the upper liquid discharge three-way valve (5); an upper liquid discharge first valve port (51) of the upper liquid discharge three-way valve (5) is communicated with a liquid discharge pipe of the refrigerating unit;

the upper liquid discharge three-way valve (5) controls the on-off of the upper liquid discharge first valve port (51) and the upper liquid discharge second valve port (52) or the on-off of the upper liquid discharge first valve port (51) and the upper liquid discharge third valve port (53), and is communicated with the liquid discharge pipe of the first liquid discharge tank (1) and the refrigerating unit or the liquid discharge pipe of the second liquid discharge tank (2) and the refrigerating unit.

5. The double-tank positive uninterruptable thermal fluoride frost drainage system according to claim 1 or 2, wherein a first pressurizing pipe (14) at the upper part of the first liquid drainage tank (1) is connected with a pressurizing second valve port (82) of the pressurizing three-way valve (8); the second pressurizing pipe (24) at the upper part of the second liquid discharge tank (2) is connected with the pressurizing third valve port (83) of the pressurizing three-way valve (8), and the pressurizing first valve port (81) of the pressurizing three-way valve (8) is connected with the high-pressure liquid storage tank (3);

the pressurizing three-way valve (8) controls the on-off of the pressurizing first valve port (81) and the pressurizing second valve port (82) or the on-off of the pressurizing first valve port (81) and the pressurizing third valve port (83), and is communicated with the first liquid discharge tank (1) and the high-pressure liquid storage tank (3) or the second liquid discharge tank (2) and the high-pressure liquid storage tank (3).